American Wood Council Span Tables
Span tables and design values for joists and rafters in one- and two-family dwellings.
Span Tables
APA Structural Use Span Tables
Uniform load tables for APA-trademarked structural panels manufactured/qualified in accordance with APA PRP-108
Southern Forest Products Association Span Tables
Span tables for visual and mechanical grades of southern pine lumber joists and rafters, and southern pine lumber and glue-laminated timber (glulam) headers, beams and girders.
Western Wood Products Association Span Tables
Span tables and design values for a variety of western lumber species.
